diff --git a/core/Makefile b/core/Makefile
index da09104..87b91bd 100644
--- a/core/Makefile
+++ b/core/Makefile
@@ -1365,6 +1365,14 @@
 	$(atree_dir)/sdk-$(HOST_OS)-$(HOST_ARCH).atree \
 	$(sdk_tools_atree_files)
 
+# development/build/sdk-android-<abi>.atree is used to differentiate
+# between architecture models (e.g. ARMv5TE versus ARMv7) when copying
+# files like the kernel image. We use TARGET_CPU_ABI because we don't
+# have a better way to distinguish between CPU models.
+ifneq (,$(strip $(wildcard $(atree_dir)/sdk-android-$(TARGET_CPU_ABI).atree)))
+  sdk_atree_files += $(atree_dir)/sdk-android-$(TARGET_CPU_ABI).atree
+endif
+
 deps := \
 	$(target_notice_file_txt) \
 	$(tools_notice_file_txt) \
diff --git a/core/combo/TARGET_linux-arm.mk b/core/combo/TARGET_linux-arm.mk
index ea28ca5..9748187 100644
--- a/core/combo/TARGET_linux-arm.mk
+++ b/core/combo/TARGET_linux-arm.mk
@@ -56,7 +56,12 @@
     TARGET_OBJCOPY := $(TARGET_TOOLS_PREFIX)objcopy$(HOST_EXECUTABLE_SUFFIX)
     TARGET_LD := $(TARGET_TOOLS_PREFIX)ld$(HOST_EXECUTABLE_SUFFIX)
     TARGET_STRIP := $(TARGET_TOOLS_PREFIX)strip$(HOST_EXECUTABLE_SUFFIX)
-    TARGET_STRIP_COMMAND = $(TARGET_STRIP) --strip-all $< -o $@
+    ifeq ($(TARGET_BUILD_VARIANT),user)
+        TARGET_STRIP_COMMAND = $(TARGET_STRIP) --strip-all $< -o $@
+    else
+        TARGET_STRIP_COMMAND = $(TARGET_STRIP) --strip-all $< -o $@ && \
+	    $(TARGET_OBJCOPY) --add-gnu-debuglink=$< $@
+    endif
 endif
 
 TARGET_NO_UNDEFINED_LDFLAGS := -Wl,--no-undefined
diff --git a/core/combo/TARGET_linux-sh.mk b/core/combo/TARGET_linux-sh.mk
index f54a49e..b8e00dd 100644
--- a/core/combo/TARGET_linux-sh.mk
+++ b/core/combo/TARGET_linux-sh.mk
@@ -29,7 +29,13 @@
 TARGET_OBJCOPY := $(TARGET_TOOLS_PREFIX)objcopy$(HOST_EXECUTABLE_SUFFIX)
 TARGET_LD := $(TARGET_TOOLS_PREFIX)ld$(HOST_EXECUTABLE_SUFFIX)
 TARGET_STRIP := $(TARGET_TOOLS_PREFIX)strip$(HOST_EXECUTABLE_SUFFIX)
+
+ifeq ($(TARGET_BUILD_VARIANT),user)
 TARGET_STRIP_COMMAND = $(TARGET_STRIP) --strip-debug $< -o $@
+else
+TARGET_STRIP_COMMAND = $(TARGET_STRIP) --strip-debug $< -o $@ && \
+	$(TARGET_OBJCOPY) --add-gnu-debuglink=$< $@
+endif
 
 TARGET_NO_UNDEFINED_LDFLAGS := -Wl,--no-undefined
 
diff --git a/core/combo/TARGET_linux-x86.mk b/core/combo/TARGET_linux-x86.mk
index d8056e3..5a90951 100644
--- a/core/combo/TARGET_linux-x86.mk
+++ b/core/combo/TARGET_linux-x86.mk
@@ -47,7 +47,13 @@
 TARGET_OBJCOPY := $(TARGET_TOOLS_PREFIX)objcopy$(HOST_EXECUTABLE_SUFFIX)
 TARGET_LD := $(TARGET_TOOLS_PREFIX)ld$(HOST_EXECUTABLE_SUFFIX)
 TARGET_STRIP := $(TARGET_TOOLS_PREFIX)strip$(HOST_EXECUTABLE_SUFFIX)
+
+ifeq ($(TARGET_BUILD_VARIANT),user)
 TARGET_STRIP_COMMAND = $(TARGET_STRIP) --strip-debug $< -o $@
+else
+TARGET_STRIP_COMMAND = $(TARGET_STRIP) --strip-debug $< -o $@ && \
+	$(TARGET_OBJCOPY) --add-gnu-debuglink=$< $@
+endif
 
 ifneq ($(wildcard $(TARGET_CC)),)
 TARGET_LIBGCC := \
diff --git a/core/main.mk b/core/main.mk
index 277315b..959cd83 100644
--- a/core/main.mk
+++ b/core/main.mk
@@ -256,12 +256,12 @@
 
 ifeq (true,$(strip $(enable_target_debugging)))
   # Target is more debuggable and adbd is on by default
-  ADDITIONAL_DEFAULT_PROPERTIES += ro.debuggable=1 persist.service.adb.enable=1
+  ADDITIONAL_DEFAULT_PROPERTIES += ro.debuggable=1
   # Include the debugging/testing OTA keys in this build.
   INCLUDE_TEST_OTA_KEYS := true
 else # !enable_target_debugging
   # Target is less debuggable and adbd is off by default
-  ADDITIONAL_DEFAULT_PROPERTIES += ro.debuggable=0 persist.service.adb.enable=0
+  ADDITIONAL_DEFAULT_PROPERTIES += ro.debuggable=0
 endif # !enable_target_debugging
 
 ## eng ##
diff --git a/core/pathmap.mk b/core/pathmap.mk
index 78dee49..6c6ff2e 100644
--- a/core/pathmap.mk
+++ b/core/pathmap.mk
@@ -88,7 +88,6 @@
 	    sax \
 	    telephony \
 	    wifi \
-	    vpn \
 	    keystore \
 	    icu4j \
 	    voip \
diff --git a/core/prebuilt.mk b/core/prebuilt.mk
index 8f9eafb..07ecf64 100644
--- a/core/prebuilt.mk
+++ b/core/prebuilt.mk
@@ -26,7 +26,22 @@
 endif
 endif
 
-include $(BUILD_SYSTEM)/base_rules.mk
+ifeq ($(LOCAL_STRIP_MODULE),true)
+  ifdef LOCAL_IS_HOST_MODULE
+    $(error Cannot strip host module LOCAL_PATH=$(LOCAL_PATH))
+  endif
+  ifeq ($(filter SHARED_LIBRARIES EXECUTABLES,$(LOCAL_MODULE_CLASS)),)
+    $(error Can strip only shared libraries or executables LOCAL_PATH=$(LOCAL_PATH))
+  endif
+  ifneq ($(LOCAL_PREBUILT_STRIP_COMMENTS),)
+    $(error Cannot strip scripts LOCAL_PATH=$(LOCAL_PATH))
+  endif
+  include $(BUILD_SYSTEM)/dynamic_binary.mk
+  built_module := $(linked_module)
+else
+  include $(BUILD_SYSTEM)/base_rules.mk
+  built_module := $(LOCAL_BUILT_MODULE)
+endif
 
 # Deal with the OSX library timestamp issue when installing
 # a prebuilt simulator library.
@@ -42,24 +57,24 @@
 ifneq ($(filter APPS,$(LOCAL_MODULE_CLASS)),)
 ifeq ($(LOCAL_DEX_PREOPT),true)
 # Make sure the boot jars get dexpreopt-ed first
-$(LOCAL_BUILT_MODULE): $(DEXPREOPT_BOOT_ODEXS) | $(DEXPREOPT) $(DEXOPT) $(AAPT)
+$(built_module): $(DEXPREOPT_BOOT_ODEXS) | $(DEXPREOPT) $(DEXOPT) $(AAPT)
 endif
-$(LOCAL_BUILT_MODULE) : $(LOCAL_PATH)/$(LOCAL_SRC_FILES) | $(ZIPALIGN)
+$(built_module) : $(LOCAL_PATH)/$(LOCAL_SRC_FILES) | $(ZIPALIGN)
 	$(transform-prebuilt-to-target-with-zipalign)
 ifeq ($(LOCAL_DEX_PREOPT),true)
 	$(hide) rm -f $(patsubst %.apk,%.odex,$@)
 	$(call dexpreopt-one-file,$@,$(patsubst %.apk,%.odex,$@))
 	$(call dexpreopt-remove-classes.dex,$@)
 
-built_odex := $(basename $(LOCAL_BUILT_MODULE)).odex
-$(built_odex): $(LOCAL_BUILT_MODULE)
+built_odex := $(basename $(built_module)).odex
+$(built_odex): $(built_module)
 endif
 else
 ifneq ($(LOCAL_PREBUILT_STRIP_COMMENTS),)
-$(LOCAL_BUILT_MODULE) : $(LOCAL_PATH)/$(LOCAL_SRC_FILES)
+$(built_module) : $(LOCAL_PATH)/$(LOCAL_SRC_FILES)
 	$(transform-prebuilt-to-target-strip-comments)
 else
-$(LOCAL_BUILT_MODULE) : $(LOCAL_PATH)/$(LOCAL_SRC_FILES) | $(ACP)
+$(built_module) : $(LOCAL_PATH)/$(LOCAL_SRC_FILES) | $(ACP)
 	$(transform-prebuilt-to-target)
 endif
 endif
@@ -79,7 +94,7 @@
 	$(transform-prebuilt-to-target)
 
 # make sure the classes.jar and javalib.jar are built before $(LOCAL_BUILT_MODULE)
-$(LOCAL_BUILT_MODULE) : $(common_javalib_jar)
+$(built_module) : $(common_javalib_jar)
 endif # TARGET JAVA_LIBRARIES
 
 ifeq ($(LOCAL_CERTIFICATE),EXTERNAL)
diff --git a/envsetup.sh b/envsetup.sh
index a845a18..a9417b8 100644
--- a/envsetup.sh
+++ b/envsetup.sh
@@ -131,12 +131,11 @@
     export PATH=$PATH$ANDROID_BUILD_PATHS
 
     unset ANDROID_JAVA_TOOLCHAIN
+    unset ANDROID_PRE_BUILD_PATHS
     if [ -n "$JAVA_HOME" ]; then
         export ANDROID_JAVA_TOOLCHAIN=$JAVA_HOME/bin
-    fi
-    export ANDROID_PRE_BUILD_PATHS=$ANDROID_JAVA_TOOLCHAIN
-    if [ -n "$ANDROID_PRE_BUILD_PATHS" ]; then
-        export PATH=$ANDROID_PRE_BUILD_PATHS:$PATH
+        export ANDROID_PRE_BUILD_PATHS=$ANDROID_JAVA_TOOLCHAIN:
+        export PATH=$ANDROID_PRE_BUILD_PATHS$PATH
     fi
 
     unset ANDROID_PRODUCT_OUT
diff --git a/target/product/core.mk b/target/product/core.mk
index b2af8da..caa3e381 100644
--- a/target/product/core.mk
+++ b/target/product/core.mk
@@ -40,6 +40,7 @@
     dmtracedump \
     dx \
     ext \
+    filterfw \
     framework-res \
     hprof-conv \
     icu.dat \
diff --git a/target/product/full_base.mk b/target/product/full_base.mk
index 8ad812e..3ded94f 100644
--- a/target/product/full_base.mk
+++ b/target/product/full_base.mk
@@ -29,6 +29,7 @@
     libWnnEngDic \
     libWnnJpnDic \
     libwnndict \
+    VideoEditor \
     WAPPushManager
 
 # Additional settings used in all AOSP builds